Assessing Measurement Consistency of Reference Standards Through Intra-Laboratory En Criteria Analysis |
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| Kiril Demerdziev, Marija Cundeva-Blajer |
- Abstract:
- Adherence to ISO/IEC 17025:2017 requires inter-laboratory comparisons and proficiency testing, alongside other measures, for ensuring test and calibration data validity. This study explores intra-laboratory comparison, as an additional quality assurance method. The presented procedure is conducted in an accredited calibration laboratory, by comparing results sourced/measured with multiple reference standards, including a high-voltage decade resistor, 8 ½ and 6 ½ digit multimeters, and a multifunction calibrator with a high-resistance measurement adapter, all of them covering the range of high resistance, above 100 MΩ. By applying the ISO/IEC 17043:2023 statistical methods and En criteria, the quantitative assessment of the measurement consistency is achieved, thus enhancing the confidence in the laboratory’s standards.
- Download:
- IMEKO-TC8-11-24-2025-018.pdf
- DOI:
- 10.21014/tc11-2025.018
- Event details
- IMEKO TC:
- TC11
- Event name:
- IMEKO TC8, TC11 and TC24 Conference
- Title:
Joint conference of the TCs ‘Traceability in Metrology’ (IMEKO TC8), ‘Measurement in Testing, Inspection and Certification’ (IMEKO TC11), and ‘Chemical Measurements’ (IMEKO TC24).
- Place:
- Torino, ITALY
- Time:
- 14 September 2025 - 17 September 2025